Home / 130,891.24-180,624.86-79,989.10

Finding the Fourth Proportional to 130,891.24, 180,624.86 and 79,989.10

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Solution

The fourth proportional to 130,891.24, 180,624.86 and 79,989.10 is: 110,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,891.24 : 180,624.86 = 79,989.10 : x
  2. Step 2: Convert to fraction form
    130,891.24/180,624.86 = 79,989.10/x
  3. Step 3: Cross multiply
    130,891.24x = 180,624.86 × 79,989.10
  4. Step 4: Simplify right side
    130,891.24x = 14,448,019,989.03
  5. Step 5: Solve for x
    x = 14,448,019,989.03/130,891.24
  6. Step 6: Final answer
    x = 110,381.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.